/*
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2, or (at your option)
 * any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
 * 02111-1307, USA.
 *
 * http://www.gnu.org/copyleft/gpl.html
 */
package com.l2jfrozen.crypt;

import java.io.IOException;

/**
 * This file is based on the Blowfish Engine that is part of the BouncyCastle JCE Copyright (c) 2000 The Legion Of The
 * Bouncy Castle (http://www.bouncycastle.org) Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"), to deal in the Software without
 * restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the
 * following conditions: The above copyright notice and this permission notice shall be included in all copies or
 * substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
public class BlowfishEngine
{
	private final static int[] KP =
	{
			0x243F6A88,
			0x85A308D3,
			0x13198A2E,
			0x03707344,
			0xA4093822,
			0x299F31D0,
			0x082EFA98,
			0xEC4E6C89,
			0x452821E6,
			0x38D01377,
			0xBE5466CF,
			0x34E90C6C,
			0xC0AC29B7,
			0xC97C50DD,
			0x3F84D5B5,
			0xB5470917,
			0x9216D5D9,
			0x8979FB1B
	};
	private final static int[] KS0 =
	{
			0xD1310BA6,
			0x98DFB5AC,
			0x2FFD72DB,
			0xD01ADFB7,
			0xB8E1AFED,
			0x6A267E96,
			0xBA7C9045,
			0xF12C7F99,
			0x24A19947,
			0xB3916CF7,
			0x0801F2E2,
			0x858EFC16,
			0x636920D8,
			0x71574E69,
			0xA458FEA3,
			0xF4933D7E,
			0x0D95748F,
			0x728EB658,
			0x718BCD58,
			0x82154AEE,
			0x7B54A41D,
			0xC25A59B5,
			0x9C30D539,
			0x2AF26013,
			0xC5D1B023,
			0x286085F0,
			0xCA417918,
			0xB8DB38EF,
			0x8E79DCB0,
			0x603A180E,
			0x6C9E0E8B,
			0xB01E8A3E,
			0xD71577C1,
			0xBD314B27,
			0x78AF2FDA,
			0x55605C60,
			0xE65525F3,
			0xAA55AB94,
			0x57489862,
			0x63E81440,
			0x55CA396A,
			0x2AAB10B6,
			0xB4CC5C34,
			0x1141E8CE,
			0xA15486AF,
			0x7C72E993,
			0xB3EE1411,
			0x636FBC2A,
			0x2BA9C55D,
			0x741831F6,
			0xCE5C3E16,
			0x9B87931E,
			0xAFD6BA33,
			0x6C24CF5C,
			0x7A325381,
			0x28958677,
			0x3B8F4898,
			0x6B4BB9AF,
			0xC4BFE81B,
			0x66282193,
			0x61D809CC,
			0xFB21A991,
			0x487CAC60,
			0x5DEC8032,
			0xEF845D5D,
			0xE98575B1,
			0xDC262302,
			0xEB651B88,
			0x23893E81,
			0xD396ACC5,
			0x0F6D6FF3,
			0x83F44239,
			0x2E0B4482,
			0xA4842004,
			0x69C8F04A,
			0x9E1F9B5E,
			0x21C66842,
			0xF6E96C9A,
			0x670C9C61,
			0xABD388F0,
			0x6A51A0D2,
			0xD8542F68,
			0x960FA728,
			0xAB5133A3,
			0x6EEF0B6C,
			0x137A3BE4,
			0xBA3BF050,
			0x7EFB2A98,
			0xA1F1651D,
			0x39AF0176,
			0x66CA593E,
			0x82430E88,
			0x8CEE8619,
			0x456F9FB4,
			0x7D84A5C3,
			0x3B8B5EBE,
			0xE06F75D8,
			0x85C12073,
			0x401A449F,
			0x56C16AA6,
			0x4ED3AA62,
			0x363F7706,
			0x1BFEDF72,
			0x429B023D,
			0x37D0D724,
			0xD00A1248,
			0xDB0FEAD3,
			0x49F1C09B,
			0x075372C9,
			0x80991B7B,
			0x25D479D8,
			0xF6E8DEF7,
			0xE3FE501A,
			0xB6794C3B,
			0x976CE0BD,
			0x04C006BA,
			0xC1A94FB6,
			0x409F60C4,
			0x5E5C9EC2,
			0x196A2463,
			0x68FB6FAF,
			0x3E6C53B5,
			0x1339B2EB,
			0x3B52EC6F,
			0x6DFC511F,
			0x9B30952C,
			0xCC814544,
			0xAF5EBD09,
			0xBEE3D004,
			0xDE334AFD,
			0x660F2807,
			0x192E4BB3,
			0xC0CBA857,
			0x45C8740F,
			0xD20B5F39,
			0xB9D3FBDB,
			0x5579C0BD,
			0x1A60320A,
			0xD6A100C6,
			0x402C7279,
			0x679F25FE,
			0xFB1FA3CC,
			0x8EA5E9F8,
			0xDB3222F8,
			0x3C7516DF,
			0xFD616B15,
			0x2F501EC8,
			0xAD0552AB,
			0x323DB5FA,
			0xFD238760,
			0x53317B48,
			0x3E00DF82,
			0x9E5C57BB,
			0xCA6F8CA0,
			0x1A87562E,
			0xDF1769DB,
			0xD542A8F6,
			0x287EFFC3,
			0xAC6732C6,
			0x8C4F5573,
			0x695B27B0,
			0xBBCA58C8,
			0xE1FFA35D,
			0xB8F011A0,
			0x10FA3D98,
			0xFD2183B8,
			0x4AFCB56C,
			0x2DD1D35B,
			0x9A53E479,
			0xB6F84565,
			0xD28E49BC,
			0x4BFB9790,
			0xE1DDF2DA,
			0xA4CB7E33,
			0x62FB1341,
			0xCEE4C6E8,
			0xEF20CADA,
			0x36774C01,
			0xD07E9EFE,
			0x2BF11FB4,
			0x95DBDA4D,
			0xAE909198,
			0xEAAD8E71,
			0x6B93D5A0,
			0xD08ED1D0,
			0xAFC725E0,
			0x8E3C5B2F,
			0x8E7594B7,
			0x8FF6E2FB,
			0xF2122B64,
			0x8888B812,
			0x900DF01C,
			0x4FAD5EA0,
			0x688FC31C,
			0xD1CFF191,
			0xB3A8C1AD,
			0x2F2F2218,
			0xBE0E1777,
			0xEA752DFE,
			0x8B021FA1,
			0xE5A0CC0F,
			0xB56F74E8,
			0x18ACF3D6,
			0xCE89E299,
			0xB4A84FE0,
			0xFD13E0B7,
			0x7CC43B81,
			0xD2ADA8D9,
			0x165FA266,
			0x80957705,
			0x93CC7314,
			0x211A1477,
			0xE6AD2065,
			0x77B5FA86,
			0xC75442F5,
			0xFB9D35CF,
			0xEBCDAF0C,
			0x7B3E89A0,
			0xD6411BD3,
			0xAE1E7E49,
			0x00250E2D,
			0x2071B35E,
			0x226800BB,
			0x57B8E0AF,
			0x2464369B,
			0xF009B91E,
			0x5563911D,
			0x59DFA6AA,
			0x78C14389,
			0xD95A537F,
			0x207D5BA2,
			0x02E5B9C5,
			0x83260376,
			0x6295CFA9,
			0x11C81968,
			0x4E734A41,
			0xB3472DCA,
			0x7B14A94A,
			0x1B510052,
			0x9A532915,
			0xD60F573F,
			0xBC9BC6E4,
			0x2B60A476,
			0x81E67400,
			0x08BA6FB5,
			0x571BE91F,
			0xF296EC6B,
			0x2A0DD915,
			0xB6636521,
			0xE7B9F9B6,
			0xFF34052E,
			0xC5855664,
			0x53B02D5D,
			0xA99F8FA1,
			0x08BA4799,
			0x6E85076A
	};
	private final static int[] KS1 =
	{
			0x4B7A70E9,
			0xB5B32944,
			0xDB75092E,
			0xC4192623,
			0xAD6EA6B0,
			0x49A7DF7D,
			0x9CEE60B8,
			0x8FEDB266,
			0xECAA8C71,
			0x699A17FF,
			0x5664526C,
			0xC2B19EE1,
			0x193602A5,
			0x75094C29,
			0xA0591340,
			0xE4183A3E,
			0x3F54989A,
			0x5B429D65,
			0x6B8FE4D6,
			0x99F73FD6,
			0xA1D29C07,
			0xEFE830F5,
			0x4D2D38E6,
			0xF0255DC1,
			0x4CDD2086,
			0x8470EB26,
			0x6382E9C6,
			0x021ECC5E,
			0x09686B3F,
			0x3EBAEFC9,
			0x3C971814,
			0x6B6A70A1,
			0x687F3584,
			0x52A0E286,
			0xB79C5305,
			0xAA500737,
			0x3E07841C,
			0x7FDEAE5C,
			0x8E7D44EC,
			0x5716F2B8,
			0xB03ADA37,
			0xF0500C0D,
			0xF01C1F04,
			0x0200B3FF,
			0xAE0CF51A,
			0x3CB574B2,
			0x25837A58,
			0xDC0921BD,
			0xD19113F9,
			0x7CA92FF6,
			0x94324773,
			0x22F54701,
			0x3AE5E581,
			0x37C2DADC,
			0xC8B57634,
			0x9AF3DDA7,
			0xA9446146,
			0x0FD0030E,
			0xECC8C73E,
			0xA4751E41,
			0xE238CD99,
			0x3BEA0E2F,
			0x3280BBA1,
			0x183EB331,
			0x4E548B38,
			0x4F6DB908,
			0x6F420D03,
			0xF60A04BF,
			0x2CB81290,
			0x24977C79,
			0x5679B072,
			0xBCAF89AF,
			0xDE9A771F,
			0xD9930810,
			0xB38BAE12,
			0xDCCF3F2E,
			0x5512721F,
			0x2E6B7124,
			0x501ADDE6,
			0x9F84CD87,
			0x7A584718,
			0x7408DA17,
			0xBC9F9ABC,
			0xE94B7D8C,
			0xEC7AEC3A,
			0xDB851DFA,
			0x63094366,
			0xC464C3D2,
			0xEF1C1847,
			0x3215D908,
			0xDD433B37,
			0x24C2BA16,
			0x12A14D43,
			0x2A65C451,
			0x50940002,
			0x133AE4DD,
			0x71DFF89E,
			0x10314E55,
			0x81AC77D6,
			0x5F11199B,
			0x043556F1,
			0xD7A3C76B,
			0x3C11183B,
			0x5924A509,
			0xF28FE6ED,
			0x97F1FBFA,
			0x9EBABF2C,
			0x1E153C6E,
			0x86E34570,
			0xEAE96FB1,
			0x860E5E0A,
			0x5A3E2AB3,
			0x771FE71C,
			0x4E3D06FA,
			0x2965DCB9,
			0x99E71D0F,
			0x803E89D6,
			0x5266C825,
			0x2E4CC978,
			0x9C10B36A,
			0xC6150EBA,
			0x94E2EA78,
			0xA5FC3C53,
			0x1E0A2DF4,
			0xF2F74EA7,
			0x361D2B3D,
			0x1939260F,
			0x19C27960,
			0x5223A708,
			0xF71312B6,
			0xEBADFE6E,
			0xEAC31F66,
			0xE3BC4595,
			0xA67BC883,
			0xB17F37D1,
			0x018CFF28,
			0xC332DDEF,
			0xBE6C5AA5,
			0x65582185,
			0x68AB9802,
			0xEECEA50F,
			0xDB2F953B,
			0x2AEF7DAD,
			0x5B6E2F84,
			0x1521B628,
			0x29076170,
			0xECDD4775,
			0x619F1510,
			0x13CCA830,
			0xEB61BD96,
			0x0334FE1E,
			0xAA0363CF,
			0xB5735C90,
			0x4C70A239,
			0xD59E9E0B,
			0xCBAADE14,
			0xEECC86BC,
			0x60622CA7,
			0x9CAB5CAB,
			0xB2F3846E,
			0x648B1EAF,
			0x19BDF0CA,
			0xA02369B9,
			0x655ABB50,
			0x40685A32,
			0x3C2AB4B3,
			0x319EE9D5,
			0xC021B8F7,
			0x9B540B19,
			0x875FA099,
			0x95F7997E,
			0x623D7DA8,
			0xF837889A,
			0x97E32D77,
			0x11ED935F,
			0x16681281,
			0x0E358829,
			0xC7E61FD6,
			0x96DEDFA1,
			0x7858BA99,
			0x57F584A5,
			0x1B227263,
			0x9B83C3FF,
			0x1AC24696,
			0xCDB30AEB,
			0x532E3054,
			0x8FD948E4,
			0x6DBC3128,
			0x58EBF2EF,
			0x34C6FFEA,
			0xFE28ED61,
			0xEE7C3C73,
			0x5D4A14D9,
			0xE864B7E3,
			0x42105D14,
			0x203E13E0,
			0x45EEE2B6,
			0xA3AAABEA,
			0xDB6C4F15,
			0xFACB4FD0,
			0xC742F442,
			0xEF6ABBB5,
			0x654F3B1D,
			0x41CD2105,
			0xD81E799E,
			0x86854DC7,
			0xE44B476A,
			0x3D816250,
			0xCF62A1F2,
			0x5B8D2646,
			0xFC8883A0,
			0xC1C7B6A3,
			0x7F1524C3,
			0x69CB7492,
			0x47848A0B,
			0x5692B285,
			0x095BBF00,
			0xAD19489D,
			0x1462B174,
			0x23820E00,
			0x58428D2A,
			0x0C55F5EA,
			0x1DADF43E,
			0x233F7061,
			0x3372F092,
			0x8D937E41,
			0xD65FECF1,
			0x6C223BDB,
			0x7CDE3759,
			0xCBEE7460,
			0x4085F2A7,
			0xCE77326E,
			0xA6078084,
			0x19F8509E,
			0xE8EFD855,
			0x61D99735,
			0xA969A7AA,
			0xC50C06C2,
			0x5A04ABFC,
			0x800BCADC,
			0x9E447A2E,
			0xC3453484,
			0xFDD56705,
			0x0E1E9EC9,
			0xDB73DBD3,
			0x105588CD,
			0x675FDA79,
			0xE3674340,
			0xC5C43465,
			0x713E38D8,
			0x3D28F89E,
			0xF16DFF20,
			0x153E21E7,
			0x8FB03D4A,
			0xE6E39F2B,
			0xDB83ADF7
	};
	private final static int[] KS2 =
	{
			0xE93D5A68,
			0x948140F7,
			0xF64C261C,
			0x94692934,
			0x411520F7,
			0x7602D4F7,
			0xBCF46B2E,
			0xD4A20068,
			0xD4082471,
			0x3320F46A,
			0x43B7D4B7,
			0x500061AF,
			0x1E39F62E,
			0x97244546,
			0x14214F74,
			0xBF8B8840,
			0x4D95FC1D,
			0x96B591AF,
			0x70F4DDD3,
			0x66A02F45,
			0xBFBC09EC,
			0x03BD9785,
			0x7FAC6DD0,
			0x31CB8504,
			0x96EB27B3,
			0x55FD3941,
			0xDA2547E6,
			0xABCA0A9A,
			0x28507825,
			0x530429F4,
			0x0A2C86DA,
			0xE9B66DFB,
			0x68DC1462,
			0xD7486900,
			0x680EC0A4,
			0x27A18DEE,
			0x4F3FFEA2,
			0xE887AD8C,
			0xB58CE006,
			0x7AF4D6B6,
			0xAACE1E7C,
			0xD3375FEC,
			0xCE78A399,
			0x406B2A42,
			0x20FE9E35,
			0xD9F385B9,
			0xEE39D7AB,
			0x3B124E8B,
			0x1DC9FAF7,
			0x4B6D1856,
			0x26A36631,
			0xEAE397B2,
			0x3A6EFA74,
			0xDD5B4332,
			0x6841E7F7,
			0xCA7820FB,
			0xFB0AF54E,
			0xD8FEB397,
			0x454056AC,
			0xBA489527,
			0x55533A3A,
			0x20838D87,
			0xFE6BA9B7,
			0xD096954B,
			0x55A867BC,
			0xA1159A58,
			0xCCA92963,
			0x99E1DB33,
			0xA62A4A56,
			0x3F3125F9,
			0x5EF47E1C,
			0x9029317C,
			0xFDF8E802,
			0x04272F70,
			0x80BB155C,
			0x05282CE3,
			0x95C11548,
			0xE4C66D22,
			0x48C1133F,
			0xC70F86DC,
			0x07F9C9EE,
			0x41041F0F,
			0x404779A4,
			0x5D886E17,
			0x325F51EB,
			0xD59BC0D1,
			0xF2BCC18F,
			0x41113564,
			0x257B7834,
			0x602A9C60,
			0xDFF8E8A3,
			0x1F636C1B,
			0x0E12B4C2,
			0x02E1329E,
			0xAF664FD1,
			0xCAD18115,
			0x6B2395E0,
			0x333E92E1,
			0x3B240B62,
			0xEEBEB922,
			0x85B2A20E,
			0xE6BA0D99,
			0xDE720C8C,
			0x2DA2F728,
			0xD0127845,
			0x95B794FD,
			0x647D0862,
			0xE7CCF5F0,
			0x5449A36F,
			0x877D48FA,
			0xC39DFD27,
			0xF33E8D1E,
			0x0A476341,
			0x992EFF74,
			0x3A6F6EAB,
			0xF4F8FD37,
			0xA812DC60,
			0xA1EBDDF8,
			0x991BE14C,
			0xDB6E6B0D,
			0xC67B5510,
			0x6D672C37,
			0x2765D43B,
			0xDCD0E804,
			0xF1290DC7,
			0xCC00FFA3,
			0xB5390F92,
			0x690FED0B,
			0x667B9FFB,
			0xCEDB7D9C,
			0xA091CF0B,
			0xD9155EA3,
			0xBB132F88,
			0x515BAD24,
			0x7B9479BF,
			0x763BD6EB,
			0x37392EB3,
			0xCC115979,
			0x8026E297,
			0xF42E312D,
			0x6842ADA7,
			0xC66A2B3B,
			0x12754CCC,
			0x782EF11C,
			0x6A124237,
			0xB79251E7,
			0x06A1BBE6,
			0x4BFB6350,
			0x1A6B1018,
			0x11CAEDFA,
			0x3D25BDD8,
			0xE2E1C3C9,
			0x44421659,
			0x0A121386,
			0xD90CEC6E,
			0xD5ABEA2A,
			0x64AF674E,
			0xDA86A85F,
			0xBEBFE988,
			0x64E4C3FE,
			0x9DBC8057,
			0xF0F7C086,
			0x60787BF8,
			0x6003604D,
			0xD1FD8346,
			0xF6381FB0,
			0x7745AE04,
			0xD736FCCC,
			0x83426B33,
			0xF01EAB71,
			0xB0804187,
			0x3C005E5F,
			0x77A057BE,
			0xBDE8AE24,
			0x55464299,
			0xBF582E61,
			0x4E58F48F,
			0xF2DDFDA2,
			0xF474EF38,
			0x8789BDC2,
			0x5366F9C3,
			0xC8B38E74,
			0xB475F255,
			0x46FCD9B9,
			0x7AEB2661,
			0x8B1DDF84,
			0x846A0E79,
			0x915F95E2,
			0x466E598E,
			0x20B45770,
			0x8CD55591,
			0xC902DE4C,
			0xB90BACE1,
			0xBB8205D0,
			0x11A86248,
			0x7574A99E,
			0xB77F19B6,
			0xE0A9DC09,
			0x662D09A1,
			0xC4324633,
			0xE85A1F02,
			0x09F0BE8C,
			0x4A99A025,
			0x1D6EFE10,
			0x1AB93D1D,
			0x0BA5A4DF,
			0xA186F20F,
			0x2868F169,
			0xDCB7DA83,
			0x573906FE,
			0xA1E2CE9B,
			0x4FCD7F52,
			0x50115E01,
			0xA70683FA,
			0xA002B5C4,
			0x0DE6D027,
			0x9AF88C27,
			0x773F8641,
			0xC3604C06,
			0x61A806B5,
			0xF0177A28,
			0xC0F586E0,
			0x006058AA,
			0x30DC7D62,
			0x11E69ED7,
			0x2338EA63,
			0x53C2DD94,
			0xC2C21634,
			0xBBCBEE56,
			0x90BCB6DE,
			0xEBFC7DA1,
			0xCE591D76,
			0x6F05E409,
			0x4B7C0188,
			0x39720A3D,
			0x7C927C24,
			0x86E3725F,
			0x724D9DB9,
			0x1AC15BB4,
			0xD39EB8FC,
			0xED545578,
			0x08FCA5B5,
			0xD83D7CD3,
			0x4DAD0FC4,
			0x1E50EF5E,
			0xB161E6F8,
			0xA28514D9,
			0x6C51133C,
			0x6FD5C7E7,
			0x56E14EC4,
			0x362ABFCE,
			0xDDC6C837,
			0xD79A3234,
			0x92638212,
			0x670EFA8E,
			0x406000E0
	};
	private final static int[] KS3 =
	{
			0x3A39CE37,
			0xD3FAF5CF,
			0xABC27737,
			0x5AC52D1B,
			0x5CB0679E,
			0x4FA33742,
			0xD3822740,
			0x99BC9BBE,
			0xD5118E9D,
			0xBF0F7315,
			0xD62D1C7E,
			0xC700C47B,
			0xB78C1B6B,
			0x21A19045,
			0xB26EB1BE,
			0x6A366EB4,
			0x5748AB2F,
			0xBC946E79,
			0xC6A376D2,
			0x6549C2C8,
			0x530FF8EE,
			0x468DDE7D,
			0xD5730A1D,
			0x4CD04DC6,
			0x2939BBDB,
			0xA9BA4650,
			0xAC9526E8,
			0xBE5EE304,
			0xA1FAD5F0,
			0x6A2D519A,
			0x63EF8CE2,
			0x9A86EE22,
			0xC089C2B8,
			0x43242EF6,
			0xA51E03AA,
			0x9CF2D0A4,
			0x83C061BA,
			0x9BE96A4D,
			0x8FE51550,
			0xBA645BD6,
			0x2826A2F9,
			0xA73A3AE1,
			0x4BA99586,
			0xEF5562E9,
			0xC72FEFD3,
			0xF752F7DA,
			0x3F046F69,
			0x77FA0A59,
			0x80E4A915,
			0x87B08601,
			0x9B09E6AD,
			0x3B3EE593,
			0xE990FD5A,
			0x9E34D797,
			0x2CF0B7D9,
			0x022B8B51,
			0x96D5AC3A,
			0x017DA67D,
			0xD1CF3ED6,
			0x7C7D2D28,
			0x1F9F25CF,
			0xADF2B89B,
			0x5AD6B472,
			0x5A88F54C,
			0xE029AC71,
			0xE019A5E6,
			0x47B0ACFD,
			0xED93FA9B,
			0xE8D3C48D,
			0x283B57CC,
			0xF8D56629,
			0x79132E28,
			0x785F0191,
			0xED756055,
			0xF7960E44,
			0xE3D35E8C,
			0x15056DD4,
			0x88F46DBA,
			0x03A16125,
			0x0564F0BD,
			0xC3EB9E15,
			0x3C9057A2,
			0x97271AEC,
			0xA93A072A,
			0x1B3F6D9B,
			0x1E6321F5,
			0xF59C66FB,
			0x26DCF319,
			0x7533D928,
			0xB155FDF5,
			0x03563482,
			0x8ABA3CBB,
			0x28517711,
			0xC20AD9F8,
			0xABCC5167,
			0xCCAD925F,
			0x4DE81751,
			0x3830DC8E,
			0x379D5862,
			0x9320F991,
			0xEA7A90C2,
			0xFB3E7BCE,
			0x5121CE64,
			0x774FBE32,
			0xA8B6E37E,
			0xC3293D46,
			0x48DE5369,
			0x6413E680,
			0xA2AE0810,
			0xDD6DB224,
			0x69852DFD,
			0x09072166,
			0xB39A460A,
			0x6445C0DD,
			0x586CDECF,
			0x1C20C8AE,
			0x5BBEF7DD,
			0x1B588D40,
			0xCCD2017F,
			0x6BB4E3BB,
			0xDDA26A7E,
			0x3A59FF45,
			0x3E350A44,
			0xBCB4CDD5,
			0x72EACEA8,
			0xFA6484BB,
			0x8D6612AE,
			0xBF3C6F47,
			0xD29BE463,
			0x542F5D9E,
			0xAEC2771B,
			0xF64E6370,
			0x740E0D8D,
			0xE75B1357,
			0xF8721671,
			0xAF537D5D,
			0x4040CB08,
			0x4EB4E2CC,
			0x34D2466A,
			0x0115AF84,
			0xE1B00428,
			0x95983A1D,
			0x06B89FB4,
			0xCE6EA048,
			0x6F3F3B82,
			0x3520AB82,
			0x011A1D4B,
			0x277227F8,
			0x611560B1,
			0xE7933FDC,
			0xBB3A792B,
			0x344525BD,
			0xA08839E1,
			0x51CE794B,
			0x2F32C9B7,
			0xA01FBAC9,
			0xE01CC87E,
			0xBCC7D1F6,
			0xCF0111C3,
			0xA1E8AAC7,
			0x1A908749,
			0xD44FBD9A,
			0xD0DADECB,
			0xD50ADA38,
			0x0339C32A,
			0xC6913667,
			0x8DF9317C,
			0xE0B12B4F,
			0xF79E59B7,
			0x43F5BB3A,
			0xF2D519FF,
			0x27D9459C,
			0xBF97222C,
			0x15E6FC2A,
			0x0F91FC71,
			0x9B941525,
			0xFAE59361,
			0xCEB69CEB,
			0xC2A86459,
			0x12BAA8D1,
			0xB6C1075E,
			0xE3056A0C,
			0x10D25065,
			0xCB03A442,
			0xE0EC6E0E,
			0x1698DB3B,
			0x4C98A0BE,
			0x3278E964,
			0x9F1F9532,
			0xE0D392DF,
			0xD3A0342B,
			0x8971F21E,
			0x1B0A7441,
			0x4BA3348C,
			0xC5BE7120,
			0xC37632D8,
			0xDF359F8D,
			0x9B992F2E,
			0xE60B6F47,
			0x0FE3F11D,
			0xE54CDA54,
			0x1EDAD891,
			0xCE6279CF,
			0xCD3E7E6F,
			0x1618B166,
			0xFD2C1D05,
			0x848FD2C5,
			0xF6FB2299,
			0xF523F357,
			0xA6327623,
			0x93A83531,
			0x56CCCD02,
			0xACF08162,
			0x5A75EBB5,
			0x6E163697,
			0x88D273CC,
			0xDE966292,
			0x81B949D0,
			0x4C50901B,
			0x71C65614,
			0xE6C6C7BD,
			0x327A140A,
			0x45E1D006,
			0xC3F27B9A,
			0xC9AA53FD,
			0x62A80F00,
			0xBB25BFE2,
			0x35BDD2F6,
			0x71126905,
			0xB2040222,
			0xB6CBCF7C,
			0xCD769C2B,
			0x53113EC0,
			0x1640E3D3,
			0x38ABBD60,
			0x2547ADF0,
			0xBA38209C,
			0xF746CE76,
			0x77AFA1C5,
			0x20756060,
			0x85CBFE4E,
			0x8AE88DD8,
			0x7AAAF9B0,
			0x4CF9AA7E,
			0x1948C25C,
			0x02FB8A8C,
			0x01C36AE4,
			0xD6EBE1F9,
			0x90D4F869,
			0xA65CDEA0,
			0x3F09252D,
			0xC208E69F,
			0xB74E6132,
			0xCE77E25B,
			0x578FDFE3,
			0x3AC372E6
	};
	//====================================
	// Useful constants
	//====================================
	private static final int ROUNDS = 16;
	private static final int BLOCK_SIZE = 8; // bytes = 64 bits
	private static final int SBOX_SK = 256;
	private static final int P_SZ = ROUNDS + 2;
	private final int[] S0, S1, S2, S3; // the s-boxes
	private final int[] P; // the p-array
	private boolean encrypting = false;
	private byte[] workingKey = null;

	public BlowfishEngine()
	{
		S0 = new int[SBOX_SK];
		S1 = new int[SBOX_SK];
		S2 = new int[SBOX_SK];
		S3 = new int[SBOX_SK];
		P = new int[P_SZ];
	}

	/**
	 * initialise a Blowfish cipher.
	 * 
	 * @param encryption whether or not we are for encryption.
	 * @param key the key used to set up the cipher.
	 * @exception IllegalArgumentException if the params argument is inappropriate.
	 */
	public void init(boolean pEncrypting, byte[] key)
	{
		encrypting = pEncrypting;
		workingKey = key;
		setKey(workingKey);
		return;
	}

	public String getAlgorithmName()
	{
		return "Blowfish";
	}

	public final int processBlock(byte[] in, int inOff, byte[] out, int outOff) throws IOException
	{
		if(workingKey == null)
			throw new IllegalStateException("Blowfish not initialised");

		if(inOff + BLOCK_SIZE > in.length)
			throw new IOException("input buffer too short");

		if(outOff + BLOCK_SIZE > out.length)
			throw new IOException("output buffer too short");

		if(encrypting)
		{
			encryptBlock(in, inOff, out, outOff);
		}
		else
		{
			decryptBlock(in, inOff, out, outOff);
		}

		return BLOCK_SIZE;
	}

	public void reset()
	{}

	public int getBlockSize()
	{
		return BLOCK_SIZE;
	}

	//==================================
	// Private Implementation
	//==================================
	private int func(int x)
	{
		return (S0[(x >>> 24)] + S1[x >>> 16 & 0xff] ^ S2[x >>> 8 & 0xff]) + S3[x & 0xff];
	}

	/**
	 * apply the encryption cycle to each value pair in the table.
	 */
	private void processTable(int xl, int xr, int[] table)
	{
		int size = table.length;
		for(int s = 0; s < size; s += 2)
		{
			xl ^= P[0];

			for(int i = 1; i < ROUNDS; i += 2)
			{
				xr ^= func(xl) ^ P[i];
				xl ^= func(xr) ^ P[i + 1];
			}

			xr ^= P[ROUNDS + 1];
			table[s] = xr;
			table[s + 1] = xl;
			xr = xl; // end of cycle swap
			xl = table[s];
		}
	}

	private void setKey(byte[] key)
	{
		/*
		 * - comments are from _Applied Crypto_, Schneier, p338 please be
		 * careful comparing the two, AC numbers the arrays from 1, the
		 * enclosed code from 0.
		 *
		 * (1) Initialise the S-boxes and the P-array, with a fixed string This
		 * string contains the hexadecimal digits of pi (3.141...)
		 */
		System.arraycopy(KS0, 0, S0, 0, SBOX_SK);
		System.arraycopy(KS1, 0, S1, 0, SBOX_SK);
		System.arraycopy(KS2, 0, S2, 0, SBOX_SK);
		System.arraycopy(KS3, 0, S3, 0, SBOX_SK);
		System.arraycopy(KP, 0, P, 0, P_SZ);
		/*
		 * (2) Now, XOR P[0] with the first 32 bits of the key, XOR P[1] with
		 * the second 32-bits of the key, and so on for all bits of the key (up
		 * to P[17]). Repeatedly cycle through the key bits until the entire
		 * P-array has been XOR-ed with the key bits
		 */
		int keyLength = key.length;
		int keyIndex = 0;
		for(int i = 0; i < P_SZ; i++)
		{
			// get the 32 bits of the key, in 4 * 8 bit chunks
			int data = 0x0000000;
			for(int j = 0; j < 4; j++)
			{
				// create a 32 bit block
				data = data << 8 | key[keyIndex++] & 0xff;
				// wrap when we get to the end of the key
				if(keyIndex >= keyLength)
				{
					keyIndex = 0;
				}
			}
			// XOR the newly created 32 bit chunk onto the P-array
			P[i] ^= data;
		}
		/*
		 * (3) Encrypt the all-zero string with the Blowfish algorithm, using
		 * the subkeys described in (1) and (2)
		 *
		 * (4) Replace P1 and P2 with the output of step (3)
		 *
		 * (5) Encrypt the output of step(3) using the Blowfish algorithm, with
		 * the modified subkeys.
		 *
		 * (6) Replace P3 and P4 with the output of step (5)
		 *
		 * (7) Continue the process, replacing all elements of the P-array and
		 * then all four S-boxes in order, with the output of the continuously
		 * changing Blowfish algorithm
		 */
		processTable(0, 0, P);
		processTable(P[P_SZ - 2], P[P_SZ - 1], S0);
		processTable(S0[SBOX_SK - 2], S0[SBOX_SK - 1], S1);
		processTable(S1[SBOX_SK - 2], S1[SBOX_SK - 1], S2);
		processTable(S2[SBOX_SK - 2], S2[SBOX_SK - 1], S3);
	}

	/**
	 * Encrypt the given input starting at the given offset and place the result in the provided buffer starting at the
	 * given offset. The input will be an exact multiple of our blocksize.
	 */
	private void encryptBlock(byte[] src, int srcIndex, byte[] dst, int dstIndex)
	{
		int xl = bytesTo32bits(src, srcIndex);
		int xr = bytesTo32bits(src, srcIndex + 4);
		xl ^= P[0];

		for(int i = 1; i < ROUNDS; i += 2)
		{
			xr ^= func(xl) ^ P[i];
			xl ^= func(xr) ^ P[i + 1];
		}

		xr ^= P[ROUNDS + 1];
		bits32ToBytes(xr, dst, dstIndex);
		bits32ToBytes(xl, dst, dstIndex + 4);
	}

	/**
	 * Decrypt the given input starting at the given offset and place the result in the provided buffer starting at the
	 * given offset. The input will be an exact multiple of our blocksize.
	 */
	private void decryptBlock(byte[] src, int srcIndex, byte[] dst, int dstIndex)
	{
		int xl = bytesTo32bits(src, srcIndex);
		int xr = bytesTo32bits(src, srcIndex + 4);
		xl ^= P[ROUNDS + 1];

		for(int i = ROUNDS; i > 0; i -= 2)
		{
			xr ^= func(xl) ^ P[i];
			xl ^= func(xr) ^ P[i - 1];
		}

		xr ^= P[0];
		bits32ToBytes(xr, dst, dstIndex);
		bits32ToBytes(xl, dst, dstIndex + 4);
	}

	private int bytesTo32bits(byte[] b, int i)
	{
		return (b[i + 3] & 0xff) << 24 | (b[i + 2] & 0xff) << 16 | (b[i + 1] & 0xff) << 8 | b[i] & 0xff;
	}

	private void bits32ToBytes(int in, byte[] b, int offset)
	{
		b[offset] = (byte) in;
		b[offset + 1] = (byte) (in >> 8);
		b[offset + 2] = (byte) (in >> 16);
		b[offset + 3] = (byte) (in >> 24);
	}
}
